Windmill



(No Model.)

O. H. DONLBY.

WINDMILL No. 417,549. Patented Deo. 17, 1889.

UNITED STATES PATENT OFFICE.

oscAR I-I. DoNLEY, oF SAN JosE, CALIFORNIA.

WlNDMlLL.

SPECIFICATIN forming` part of Letters Patent No. 417,549, dated December 1'?, 1889.

Application iiled July 29, 1887. Serial No. 245,637. (No model.)

To all wwm it may concern,.-

Be it known that I, OSCAR H. DONLEY, of San Jos, Santa Clara county, State of California, have invented an Improvement in Windmills; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to the class of windmills; and it consists in the construction and combination of devices which I shall hereinafter fully describe and claim.

Figure l is a perspective view of the millhead, a portion of the turn-table frame being broken away. Fig. 2 is a side elevation and section. Fig. 3 is afront view of the pitmanconnection.

A is the tower of the mill, having pivoted in its top a turn-table B, in the frame b of which is journaled the shaft C, which carries the wind-wheel D, said shaft having a crank c.

In the arms of the frame b is journaled a short counter-shaft E, to which is secured one end of a curved lever F, the other end or arm fof which is bent downwardly, and is connect-ed with the pitman G of the pump by a joint, which I shall presently describe.

The crank c of the wheel-shaft is connected with thecurved lever by means of a link H, the connection being made by a removable bolt h, which passes through the link and through any of a series of holes' f in the curved lever. The lever is made on such a curve that each of its holes is equidistant from the axial center of the wheel-shaft, so that the link may be connected with any of the holes without changing the proper position of the piston in the pump, thereby rendering it possible and practicable to vary the length of the stroke of the pump by setting the connecting-bolt h in any of the holes, it

being obvious that the connection with the y hole nearest the pivotal center of the lever gives the longest stroke of the pump, and that nearest the outer end of the lever gives the shortest.

I am aware that a crank-shaft for a windmill has been connected by a link with an oscillating lever which is connected with the pitman of a pump, and that holes have been shown in this lever for ythe purpose of varying the connection between it and the crankshaft; but in. these cases, as far as I am aware, the oscillating lever has been a straight one, and in making the changed connection of the link by setting it in different holes it is obvious that as said holes are not equidistant from the axis of the crank-shaft the link has to be drawn up or pushed down in order to effect the different connections, and therefore the proper position of the piston in the pump is changed; but where the lever is curved or its series of holes arranged in an arc having for its center the axis of the crank-shaft it is obvious the connection may be made with any of the holes without changing the position of the pump-piston, but resultin 0 in a variation of the levers oscillationV at the point of connection for the purpose of changing the stroke of the pump.

The connection of the lever with the pitman is made as follows: The downturned end or arm f of the lever F is outwardly turned and slotted on each side of the pitman the ends being rounded and acting as bearings, allowing for the oscillatory movement of said lever. Fitted loosely upon the pit-man above and below the rounded ends of the lever-arm and bearing thereon are collars J, which are held to place by means of nuts K, threaded on the pitman above and below. It will be seen that this connect-ion forms a kind of knuckle-joint, perlnitting the oscillatory movement-of the lever and effecting the vertically-reciprocating movement of the pitman, and also providing for the swiveling of the entire turn-table about the pitman.

By setting up the nuts K any lost motion will be taken up.

L is the vane, and M is the cord by which the mill is thrown into and out of the wind.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a windmill, a reciprocating pump-pitman and an oscillating lever operated by the crank-shaft of the mill, in combination with In Witness whereof I have hereunto set my hand.

OSCAR H. DONLEY.

Titnessesz S. II. NOURSE, 11'. C. LEE. 

